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Subject[PATCH v2 49/70] kernel/events/uprobes: Use maple tree iterators instead of linked list
Date
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
kernel/events/uprobes.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 00b0358739ab3..b0aa05be2a61d 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -356,8 +356,9 @@ static struct vm_area_struct *
find_ref_ctr_vma(struct uprobe *uprobe, struct mm_struct *mm)
{
struct vm_area_struct *tmp;
+ MA_STATE(mas, &mm->mm_mt, 0, 0);

- for (tmp = mm->mmap; tmp; tmp = tmp->vm_next)
+ mas_for_each(&mas, tmp, ULONG_MAX)
if (valid_ref_ctr_vma(uprobe, tmp))
return tmp;

@@ -1239,9 +1240,10 @@ static int unapply_uprobe(struct uprobe *uprobe, struct mm_struct *mm)
{
struct vm_area_struct *vma;
int err = 0;
+ MA_STATE(mas, &mm->mm_mt, 0, 0);

mmap_read_lock(mm);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ mas_for_each(&mas, vma, ULONG_MAX) {
unsigned long vaddr;
loff_t offset;

@@ -1990,8 +1992,9 @@ bool uprobe_deny_signal(void)
static void mmf_recalc_uprobes(struct mm_struct *mm)
{
struct vm_area_struct *vma;
+ MA_STATE(mas, &mm->mm_mt, 0, 0);

- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ mas_for_each(&mas, vma, ULONG_MAX) {
if (!valid_vma(vma, false))
continue;
/*
--
2.28.0
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